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- W3200280721 abstract "Induction of ferromagnetism in topological insulators (TI) by transition metal (TM) ion doping has emerged out to be important both from technological point of view and for experimental verification of exotic fundamental physical concepts. Contradicting reports available in the literature on the effect of TM doping on properties of TI's incite the need for further theoretical and experimental works in this field. In the present manuscript, density functional theory based ab-initio theoretical simulations have been carried out on 3d TM (V, Cr, Mn, Fe, Co & Ni) doped TI of Bi 2 Se 3 using the Quantum Espresso code. We have studied the structural changes in Bi 2 Se 3 lattice upon doping by transition metals , stability of the doped materials has been tested by calculating formation energies, subsequently, the magnetic properties of the samples have been investigated and finally, we have simulated the bulk electronic band structure of doped Bi 2 Se 3 topological insulator. Alongwith substitutional doping, we have also investigated the effect of interstitial doping in the bulk band structure of the samples, the report of which is scanty in the literature. The results have been compared vis-a-vis similar reports available in the literature. As a new finding we have shown that interstitial doping of TM ions in Bi 2 Se 3 make it a n-type semiconductor. • DFT based ab-initio theoretical simulations have been carried out on TM doped Bi 2 Se 3 . • Calculations have been carried out on 2 × 2 × 1 supercell having 60 atoms with 4% doping. • Alongwith substitutional doping, detail analysis done for interstitial doping also. • Stability, structural changes and magnetic properties under TM doping investigated. • Finally bulk electronic band structure alongwith density of states calculations done." @default.
- W3200280721 created "2021-09-27" @default.
- W3200280721 creator A5047840240 @default.
- W3200280721 creator A5088610809 @default.
- W3200280721 date "2021-11-01" @default.
- W3200280721 modified "2023-09-23" @default.
- W3200280721 title "Ab-initio electronic structure simulations of transition metal doped Bi2Se3 topological insulator" @default.
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- W3200280721 doi "https://doi.org/10.1016/j.spmi.2021.107033" @default.
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